News Details
Flame retardant for plastics
2017-10-24 11:51:25
Flame retardant for plastics
The field of plastic applications has been expanding, but its combustible and calorific value, which is easy to ignite, has brought unexpected danger and loss to mankind. Therefore from the late 60 s, people began to pay attention and emphasis on natural and synthetic materials of flame retardant, plastic began with flame retardant agent as a kind of important auxiliary the first rise in chemical fiber, plastics industry.
Since the 1970s, plastic flame retardants have developed rapidly, and consumption and variety have risen sharply, increasing at an annual rate of about 6 percent to 8 percent. Among the many additives in the plastic industry, the consumption of plastic flame retardant has jumped to the second place, which is the second only to plasticizer.
Flame retardants are usually divided into additive and reactive types. Additive flame retardant is used in thermoplastic plastic and is the world's largest flame retardant, accounting for 90% of the total output of flame retardants. Reactive flame retardants are mostly used in thermosetting plastics.
The chemical structure can be divided into inorganic flame retardant and organic flame retardant. Inorganic flame retardants mainly include antimony compounds, inorganic boron compounds, inorganic phosphorus flame retardants, inorganic hydroxide and so on. Organic flame retardants include organic halogen flame retardants and organophosphorus flame retardants.
The development of flame retardant antimony product price high, large amount of smoke, and antimony trioxide is an essential part of halogen flame retardant synergistic agent, therefore to antimony trioxide particle fineness requirement is more and more thin, not only can greatly reduce the consumption, improve the flame retardancy, and the amount of smoke is also greatly reduced. Now the fineness is generally a few microns to 0.01 mu m.
Ultra-fine pure active oxide antimony, average particle size 0.02 mu m, content of 99.999%. The particle size is less than 0. 1 mu m of 2 antimony, adding 1% can be good flame retardant in pp, and it will not affect the impact strength and transparency of pp.
In addition, antimony trioxide and aluminum hydroxide, zinc borate and fluoroborate are used to reduce the amount of antimony trioxide and reduce the amount of smoke. In conclusion, the development of antimony flame retardants has been developed in super refining, seeking for antimony substitutes and reducing the amount of smoke.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
The development of bromine series flame retardant bromide flame retardants in spite of large amount of smoke, but as a result of good flame retardant performance, less dosage, small impact on product performance, so in a reasonable period of time in the future is still the main flame retardants. With the development of technology, the new development of the international bromine flame retardant is to continue to increase the bromine content and increase the molecular weight.
The main components of pb-68 are brominated polystyrene, with a molecular weight of 15,000 and bromine by 68%. Polypentabromophenol acrylate, with a bromine amount of 70 5% and a molecular weight of 30,000 ~ 80,000. These flame retardants suitable for all kinds of special engineering plastics, the migration, compatibility, thermal stability, flame retardancy, etc are much better than many small molecules flame retardant, has the potential to be the updated products in the future.
The phosphor flame retardant is mostly liquid, mainly used in plastics such as pu and PVC. The main drawback of small molecular phosphorus flame retardant is that it is volatile and low heat resistance. At present, we are trying to develop the compounds and the odes of the large molecular weight, which contain phosphorus, bromine and chlorine, and have very low viscosity, especially suitable for pouring products and pu soft foam plastics.
The multi-functionalization of flame retardant and plasticizer, flame retardant and crosslinking is another major aspect of the development of phosphor flame retardant. Flame retardant plasticizer (especially hypothermic plasticizer) is mainly used in PVC products, such as diisopropyl phosphatide in domestic production. Flame retardant crosslinking agent are some of the phosphorus polyols with reaction activity class, not only can be used as a pu reactive flame retardant, but also with and bromine flame retardants used in epoxy resin, can greatly reduce the dosage of the bromide flame retardants.
Phosphorus-containing flame retardants in the future to low poison development, not only solve the toxicity of the product itself, but also the combustion decomposition product of the toxicity and environmental pollution of the waste, and even considered toxic problem in the process of production, sales, and stored.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The field of plastic applications has been expanding, but its combustible and calorific value, which is easy to ignite, has brought unexpected danger and loss to mankind. Therefore from the late 60 s, people began to pay attention and emphasis on natural and synthetic materials of flame retardant, plastic began with flame retardant agent as a kind of important auxiliary the first rise in chemical fiber, plastics industry.
Since the 1970s, plastic flame retardants have developed rapidly, and consumption and variety have risen sharply, increasing at an annual rate of about 6 percent to 8 percent. Among the many additives in the plastic industry, the consumption of plastic flame retardant has jumped to the second place, which is the second only to plasticizer.
Flame retardants are usually divided into additive and reactive types. Additive flame retardant is used in thermoplastic plastic and is the world's largest flame retardant, accounting for 90% of the total output of flame retardants. Reactive flame retardants are mostly used in thermosetting plastics.
The chemical structure can be divided into inorganic flame retardant and organic flame retardant. Inorganic flame retardants mainly include antimony compounds, inorganic boron compounds, inorganic phosphorus flame retardants, inorganic hydroxide and so on. Organic flame retardants include organic halogen flame retardants and organophosphorus flame retardants.
The development of flame retardant antimony product price high, large amount of smoke, and antimony trioxide is an essential part of halogen flame retardant synergistic agent, therefore to antimony trioxide particle fineness requirement is more and more thin, not only can greatly reduce the consumption, improve the flame retardancy, and the amount of smoke is also greatly reduced. Now the fineness is generally a few microns to 0.01 mu m.
Ultra-fine pure active oxide antimony, average particle size 0.02 mu m, content of 99.999%. The particle size is less than 0. 1 mu m of 2 antimony, adding 1% can be good flame retardant in pp, and it will not affect the impact strength and transparency of pp.
In addition, antimony trioxide and aluminum hydroxide, zinc borate and fluoroborate are used to reduce the amount of antimony trioxide and reduce the amount of smoke. In conclusion, the development of antimony flame retardants has been developed in super refining, seeking for antimony substitutes and reducing the amount of smoke.
Triisobutyl Phosphate(TIBP) is mainly used for antifoamer and penetrant. It is also be widely used in printing and dying, ink, construction, and oil field additives, etc. Another chemical name of Triisobutyl Phosphate (TIBP) is tri -butyl phosphate.
The development of bromine series flame retardant bromide flame retardants in spite of large amount of smoke, but as a result of good flame retardant performance, less dosage, small impact on product performance, so in a reasonable period of time in the future is still the main flame retardants. With the development of technology, the new development of the international bromine flame retardant is to continue to increase the bromine content and increase the molecular weight.
The main components of pb-68 are brominated polystyrene, with a molecular weight of 15,000 and bromine by 68%. Polypentabromophenol acrylate, with a bromine amount of 70 5% and a molecular weight of 30,000 ~ 80,000. These flame retardants suitable for all kinds of special engineering plastics, the migration, compatibility, thermal stability, flame retardancy, etc are much better than many small molecules flame retardant, has the potential to be the updated products in the future.
The phosphor flame retardant is mostly liquid, mainly used in plastics such as pu and PVC. The main drawback of small molecular phosphorus flame retardant is that it is volatile and low heat resistance. At present, we are trying to develop the compounds and the odes of the large molecular weight, which contain phosphorus, bromine and chlorine, and have very low viscosity, especially suitable for pouring products and pu soft foam plastics.
The multi-functionalization of flame retardant and plasticizer, flame retardant and crosslinking is another major aspect of the development of phosphor flame retardant. Flame retardant plasticizer (especially hypothermic plasticizer) is mainly used in PVC products, such as diisopropyl phosphatide in domestic production. Flame retardant crosslinking agent are some of the phosphorus polyols with reaction activity class, not only can be used as a pu reactive flame retardant, but also with and bromine flame retardants used in epoxy resin, can greatly reduce the dosage of the bromide flame retardants.
Phosphorus-containing flame retardants in the future to low poison development, not only solve the toxicity of the product itself, but also the combustion decomposition product of the toxicity and environmental pollution of the waste, and even considered toxic problem in the process of production, sales, and stored.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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